Well, it seems the most likely idea. The cylons could easily wipe out the humans, but instead are pushing them away from Caprica (and Kobol) and towards the only other planet they know where to go - earth. Just a theory.

It really irks me that neither Adamo nor the president wants to send help to rescue those military guys back on Caprica. And I remember Starbuck asking the president about them and her reply was something like "until we find earth everything else can wait".

Which makes me always think that she's also a cylon. That's a stretch and I'm probably all wrong, but she's the greatest influence on the usually all military Commander Adamo. It was she who lead him from "We're at War!" to "we lost the war, now let's cut our losses and find earth".

Just a theory, but if she's isn't a cylon, I think there's still some around, and in high positions too.